1,721,160 research outputs found
All-optical Nyquist-OTDM to Nyquist-WDM conversion for high-granular flexible optical networks
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Experimental investigation on security of temporal phase coding OCDMA system with code-shift keying and differential phase-shift keying
No full textWe experimentally demonstrate security vulnerability in the temporal phase coding single-user DPSK- and CSK-OCDMA systems with a DPSK demodulator. In the systems without proper decoding, error free BER performance and clear open eye diagrams indicate the eavesdropping possibility for both systems. We also discuss the principle of DPSK demodulation attack. ©2010 IEEE.</p
Ultrafast optical pulse repetition rate multiplication based on time domain spectral amplitude/phase filtering
No full textWe have proposed and experimentally demonstrated an ultrafast optical pulse repetition rate multiplication technique from a relatively slow optical pulse source at 1550nm based on reconfigurable time domain spectral amplitude/phase filtering operation. In the proposed technique, a pair of dispersive fibers and a high speed electro-optical modulator driven by a 40GHz pulse pattern generator that can be rapidly programmed are used to control the repetition rate. In the experiment, repetition rate multiplication from 10GHz to a high speed repetition rate of 20GHz and 40GHz has been successfully achieved by the proposed time domain spectral amplitude/phase filtering.</p
Demonstration of Multi-hop Optical Add-Drop Network with High Frequency Granular Optical Channel Defragmentation Nodes
No full textHigh frequency-granularity and format independent optical channel defragmentation for flexible optical networks
No full textDemonstration of PAM4-OCDM system with electrical amplitude-level pre-tuning and post-equalization for data centers applications
No full textA PAM4-OCDM system with optical multi-/demultiplexing and electrical pre-/post-processing is proposed for short-reach applications. We experimentally demonstrate, for the first time, a power-efficient 4 OC x 10 GSymbol/s PAM4-OCDM system. The four PSK-OCs are simultaneously generated using a single light source and a passive multiport optical encoder and received by a single optical decoder and cascaded DSP. The effectiveness of the electrical-domain amplitude level pre-tuning and post-equalizer are demonstrated, considering different values of shot and beat noises
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